103120217 has 2 divisors, whose sum is σ = 103120218. Its totient is φ = 103120216.

The previous prime is 103120189. The next prime is 103120219. The reversal of 103120217 is 712021301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92236816 + 10883401 = 9604^2 + 3299^2 .

It is a cyclic number.

It is not a de Polignac number, because 103120217 - 2⁶ = 103120153 is a prime.

Together with 103120219, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 103120195 and 103120204.

It is not a weakly prime, because it can be changed into another prime (103120219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51560108 + 51560109.

It is an arithmetic number, because the mean of its divisors is an integer number (51560109).

Almost surely, 2^103120217 is an apocalyptic number.

It is an amenable number.

103120217 is a deficient number, since it is larger than the sum of its proper divisors (1).

103120217 is an equidigital number, since it uses as much as digits as its factorization.

103120217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 103120217 is about 10154.8125044237. The cubic root of 103120217 is about 468.9371137550.

Adding to 103120217 its reverse (712021301), we get a palindrome (815141518).

The spelling of 103120217 in words is "one hundred three million, one hundred twenty thousand, two hundred seventeen".